Mop-wringer.



B. E. DOBBINS & W. P. BARTHOLOW.

MOP WRINGER.

APPLICATION FILED MAY 11, 15112,

1 ,089,9 1 4. Patented Mar. 10, 19M

2 SHEETSBHEET 1.

COLUMBIA Arman/um co, ASIHNOTON. {L c.

E. E. DOBBINS & W. P. BARTHOLOW.

MOP WRINGBR.

APPLICATION TILED MAY 11,1012.

Patented Mar. 10, 1914.

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STATES ATENT @FFTQE.

ELMER E. DOBBINS ANIJ WILLIAM P. BARTHOLOW, OF MINNEAPOLIS, MINNESOTA,

ASSIGNORS TO DOBBINS MANUFACTURING COMPANY, OF MINNEAPOLIS, MINNE- SOTA, A CORPORATION OF SOUTH DAKOTA.

MOP-WRINGER.

Specification of Letters Patent.

Application filed May 11, 1912.

Patented Mar. 10, 19M.

Serial No. 696,559.

To all whom it may concern Be it known that we, ELMER E. DOBBINS and WILLIAM P. BAR'II-IOLOW, citizens of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Mop-Wringers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention has for its object to provide a detachable mop wringing attachment for pails, and, to this end, it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

The invention is illustrated in the accompanying drawings wherein like characters indicate like parts throughout the several views.

Referring to the drawings,---Figure 1 is a plan view of the improved mop wringing attachment detachably applied in working position to a pail; Fig. 2 is a vertical section taken on the line 00 m of Fig. 1; Fig. 3 is a side elevation of the improved mop wring ing attachment removed from the pail, some parts being broken away; Fig. 4 is a detail view, in side elevation, on an enlarged scale, of some of the parts shown in Fig. 3; Fig. 5 is a vertical section taken on the line a? m of Fig. 4; Fig. 6 is a detail view of one of the fulcrum lugs and associate parts; and Fig. 7 is a transverse section taken through one of the rollers.

The numeral 1 indicates a metallic scrub pail, as shown, preferably formed with straight sides, and having the customary bail 2. Detachably secured to the pail 1, is a pair of vertically extended and laterally spaced bearing plates 3. These two bearing plates 3 are connected by means of a pair of diametrically opposite segmental metallic bands 41- telescoped into the pail 1 and having their ends bent parallel with said plates and secured thereto by means of rivets 5. Just above the bands 4, each bearing plate 3 is folded or bent outward to form a horizontally ext-ended channel 6. These channels 6 are open at their ends and are of such length as to rest upon the upper edge of the pail 1 which acts as a base of resistance for the lmproved attachment. A nutted bolt 7 extends through the pail 1 and one of the bands 4-, and detaehably holds the improved mop wringing attachment against removal from the pail 1.

Secured to the inner faces of the hearing plates 3 and extending beyond the right hand ends of the channels 6, with respect to Fig. 2, is a pair of supplemental bearing plates 8 stamped or cut from quite heavy metal. J ournaled in the supplemental hearing plates 8, is a horizontally extended shaft 9 with its ends projecting into the channels 6. Mounted for parallel traveling movement toward and from the shaft 9, is a second shaft 10, identical with the shaft 9 and having its ends projecting into and guided by the channels 6. Loosely journaled on each shaft 9 and 10, is a wringing roller 11. As shown, these rollers 11 are preferably made from galvanized sheet metal rolled into the form of cylinders and connected by a folded seam 12. The ends of the rollers 11 are closed by means of square pieces of quite heavy metal having their corners bent laterally to form caps 13 which are telescoped into the ends of the rollers 11 and secured thereto, at their bent ends, by means of drops of solder 1 1-. The caps 13, between their soldered points, do not quite engage the rollers 11, thereby permitting the water to pass thcrebetween in either direction. In the center of each cap 13, is punched or cut, a round hole 15, and through which holes are loosely teleseoped the shafts 9 and 10.

For drawing the traveling roller 11 into engagement with the fixed roller 11, we pro vide a pair of laterally spaced foot actuated toggle levers, each comprising a long arm 16 and a short arm 17 pivotally connected at 18. The free ends of the short arms 17 of the toggle levers are arranged to project vertically downward between the ends of the traveling roller 11 and the hearing plates 3 and have journaled thereto, the shaft 10. At their upper ends, the short arms 17 extend beyond their pivotal connections 18 and normally engage the stop pins 19 secured to and projecting laterally from the long arms 16, thereby limiting the straightening movements of the toggle levers. From their pivotal connections 18, the long arms 16 are curved upwardly, outwardly, and downwardly to form, on their under edges, cam surfaces 20 that extend just above the shaft 9. These long arms 16, at their cam surfaces 20, are fulcrumed for endwise sliding movement, on a pair of roller equipped cam studs 21. The cam studs 21 are in, the form of nut equipped screw bolts secured to and projecting laterally inward from the supplemental bearing plates 8, just outside of and slightly above the axis of the fixed roller 11. The outer ends of the long arms 16, of the toggle levers, are connected by a transverse foot piece or stirrup 22. To hold the long arms 16 in engagement with the cam studs 21, a double ended hook 23 is anchored at one end to one of the bearing plates 3 and its other end embraces and overlies one of the long arms 16, of the toggle levers.

The traveling roller 11 is normally yieldingly held separated from the fixed roller 11 by means of a pair of springs as having at the intermediate portions, a plurality of coils 25. These springs 24 extend parallel with and just outside of the toggle levers and one end of each thereof is secured to the shaft 10 by coiling the same thereabout, and the other ends of the springs 24 are anchored to the cam studs 21. Stop pins 26 secured to the long arms 16, of thetoggle levers, project laterally therefrom and normally engage the supplemental bearing plates 8 to limit the separating movement of the traveling roller 11, with respect to the fixed roller 11.

Secured to the lower edge of each bearing plate 3, is an inwardly and downwardly projecting deflecting plate 27 for guiding the mop as the same is dropped into the pail 1 between the rollers 11. These deflecting plates prevent any of the strings of the mop from getting between the ends of the rollers 11 and the bearing plates 3 and Winding on the shafts 9 and 10. The lower horizontal edges of the deflecting plates 27 are, as shown, rolled or folded to prevent said plates from cutting the mop as the same is drawn out of the pail between the said rollers 11. These deflecting plates also prevent the edge portions of the mop from being forced beyond the ends of the rollers 11 under the squeezing action of said rollers. It may be here stated that the bearing plates 8 and deflecting plates 27 constitute side frames.

To operate the improved wringing attachment, the mop, not shown, is first dropped into the pail between the rollers 11, then one foot of the operator is placed on the bracket 28 and his other foot is placed on the stirrup 22. By a downward pressure on the stirrup 22, the traveling roller 11 is moved toward the fixed roller 11. Owing to the peculiar shape and location of the long arms 16 of the toggle levers, the traveling roller 11, during the first part of its advance movement, moves quite rapidly toward the fixed roller 11, but as the same advances, its speed decreases and the leverage thereon'increases. The buckling action of the toggle levers does not take place until near the final movement of the traveling roller 11.

The above described detachable mop wringing attachment, while extremely simple and of comparatively small cost to manufacture, has, in actual usage, been found highly eflicient for the purpose had in view. As is evident, either the pail or any part of the device can be replaced, if broken or worn out, without having to purchase an entire new device.

What we claim is:

1. The combination with a pail having relatively fixed side frames thereon and fulcrums on said side frames, of a pair of laterally spaced connected levers mounted, at their intermediate portions, on said ful-- crums for rocking and sliding movements, a pair of cooperating wringing rollers, one journaled in hearings on said side frames and the other journaled in the ends of said levers, and means guiding the traveling wringing roller for straight line movement toward and from the other wringing roller, substantially as described.

2. The combination with a pail havin relatively fixed side frames thereon and fu crums on said side frames, of a pair of laterally spaced connected levers mounted, at their intermediate portions, on said fulcrums for rocking and sliding movements, a pair of coeperat-ing wringing rollers, one journaled in hearings on said side frames and the other journaled in the ends of said levers, means guiding the traveling wringing roller for straight line movement toward and from the other wringing roller, and springs tending to separate said. wringing rollers, substantially as described.

3. The combination with a pail having relatively fixed side frames thereon and fulcrulns on said side frames, of a pair of laterally spaced toggle levers, one of the arms of each of said toggle levers being curved and mounted on said fulcrums for rocking and sliding movements, a spring tending to straighten said toggle levers, and a pair of cooperating wringing rollers one journaled in hearings on said side frames and the other journaled in the ends of said levers.

t. The combination with a pail having relatively fixed side frames thereon and fulcrums on said side frames, of a pair of laterally spaced toggle levers, one of the arms of each of said toggle levers being curved In testimony whereof we aflix our signatures in presence of two witnesses.

ELMER E. DOBBINS. WILLIAM P. BARlI-IOLOWV.

Witnesses EDITH SIMERMAN, HARRY D. KILGORE.

and mounted on said fulerums for rocking and sliding movement, a spring tending to Straighten said toggle levers, and a pair of cotiperating wringing rollers, one jonrnaled in bearings on said frames and the other journaled in the ends of said levers, and stops for limiting the straightening action of said toggle levers. 4

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

